| Muuruejärvi | |
| Pushpin Map: | Finland |
| Coords: | 63.0833°N 57°W |
| Type: | Lake |
| Catchment: | Kymijoki |
| Basin Countries: | Finland |
| Area: | 25.3km2 |
| Depth: | 4.98m (16.34feet) |
| Max-Depth: | 25.78m (84.58feet) |
| Volume: | 0.126km3 |
| Shore: | 105.44km (65.52miles) |
| Elevation: | 100.8m (330.7feet) |
| Frozen: | December-April |
| Islands: | Rajasaari, Rutasaari, Vihonsaari, Hirvisaari, Mokonsaari |
Muuruejärvi is a medium-sized lake of Finland. It is situated in Viitasaari, between two rapids, Huopanankoski and Keihärinkoski.